Takehana, Yasuhiro
Umekita, Maya
Hatano, Masaki
Kato, Chiaki
Sawa, Ryuichi
Igarashi, Masayuki
Article History
Received: 14 October 2016
Revised: 27 January 2017
Accepted: 30 January 2017
First Online: 1 March 2017
Competing interests
: The authors declare no conflict of interest.
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